<?php

/**
 * LoginForm class.
 * LoginForm is the data structure for keeping
 * user login form data. It is used by the 'login' action of 'SiteController'.
 */
class LoginForm extends CFormModel
{
	public $usernameOrEmail;
	public $password;
	public $rememberMe;

	private $_identity;

	/**
	 * Declares the validation rules.
	 * The rules state that username or email and password are required,
	 * and password needs to be authenticated.
	 */
	public function rules()
	{
		return array(
			// username and password are required
			array('password', 'required'),
			array('usernameOrEmail', 'required'),
			// rememberMe needs to be a boolean
			array('rememberMe', 'boolean'),
			// password needs to be authenticated
			array('password', 'authenticate'),
		);
	}

	/**
	 * Declares attribute labels.
	 */
	public function attributeLabels()
	{
		return array(
			'usernameOrEmail'=>'Username / Email',
		);
	}

	/**
	 * Authenticates the password.
	 * This is the 'authenticate' validator as declared in rules().
	 */
	public function authenticate($attribute,$params)
	{
		if(!$this->hasErrors())
		{
			$this->_identity=new UserIdentity($this->usernameOrEmail,$this->password);
			if(!$this->_identity->authenticate())
				$this->addError('password','Incorrect username/email or password.');
		}
	}

	/**
	 * Logs in the user using the given username or email and password in the model.
	 * @return boolean whether login is successful
	 */
	public function login()
	{
		if($this->_identity===null)
		{
			$this->_identity=new UserIdentity($this->usernameOrEmail,$this->password);
			$this->_identity->authenticate();
		}

        switch($this->_identity->errorCode)
        {
            case UserIdentity::ERROR_NONE:
                Yii::app()->user->login($this->_identity);
                return true;
                break;
            case UserIdentity::ERROR_USERNAME_INVALID:
                $this->addError('email','Email address is incorrect.');
                return false;
                break;
            default: // UserIdentity::ERROR_PASSWORD_INVALID
                $this->addError('password','Password is incorrect.');
                return false;
                break;
        }
    }
}
